NAME<\/a> ditroff \u2212 classical device-independent roff<\/p>\n The name ditroff<\/i> refers to a historical development stage of the roff<\/i>(7) text processing system. In roff<\/i> systems extant today, the name troff<\/i> is a synonym for ditroff<\/i>.<\/p>\n Early versions of roff<\/i> by Joe Ossanna generated two programs from the same sources, using conditional compilation to distinguish them. nroff<\/i> produced text-oriented TTY output, while troff<\/i> generated graphical output for exactly one output device, the Wang Graphic Systems CAT phototypesetter.<\/p>\n In 1979, Brian Kernighan rewrote troff<\/i> to support more devices by creating an intermediate output format for troff<\/i> that could be fed into postprocessor programs which actually do the printout on the device. Kernighan\u2019s version marks what is known as \u201cclassical troff\u201d today. In order to distinguish it from Ossanna\u2019s original version, it was called ditroff<\/i> (d<\/i>evice i<\/i>ndependent t<\/i>roff) on some systems, though this naming isn\u2019t mentioned in the classical documentation.<\/p>\n Today, all existing roff<\/i> systems are based on Kernighan\u2019s multi-device troff<\/i>. The distinction between troff<\/i> and ditroff<\/i> is no longer necessary; each modern troff<\/i> provides the complete functionality of ditroff<\/i>.<\/p>\n The easiest way to use ditroff<\/i> is via the GNU roff<\/i> system, groff<\/i>. The groff<\/i>(1) program is a wrapper around (di)troff<\/i> that automatically handles device postprocessing.<\/p>\n This document was written by Bernd Warken<\/a>.<\/p>\n CSTR\u00a0#54<\/p>\n refers to the 1992 revision of the Nroff\/Troff User\u2019s Manual<\/i> by J. F. Ossanna and Brian Kernighan.<\/p>\n CSTR\u00a0#97<\/p>\n refers to A Typesetter-independent TROFF<\/i>, by Brian Kernighan and is the original documentation of the first multi-device troff<\/i> (ditroff<\/i>).<\/p>\n roff<\/i>(7)<\/p>\n provides a history and conceptual overview of roff<\/i> systems.<\/p>\n troff<\/i>(1)<\/p>\n describes the GNU implementation of (di)troff<\/i>.<\/p>\n groff<\/i>(1)<\/p>\n documents the GNU roff<\/i> program and includes pointers to further documentation about groff<\/i>.<\/p>\n groff_out<\/i>(5)<\/p>\n describes the groff<\/i> version of the intermediate output language, the basis for multi-device output.<\/p>\n ditroff \u2212 classical device-independent roff <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[971],"tags":[973,1032,972],"class_list":["post-3940","post","type-post","status-publish","format-standard","hentry","category-7-miscelanea","tag-973","tag-ditroff","tag-man7"],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/3940","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/comments?post=3940"}],"version-history":[{"count":0,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/3940\/revisions"}],"wp:attachment":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/media?parent=3940"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/categories?post=3940"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/tags?post=3940"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
DESCRIPTION<\/a>
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